Duplex register



. .Aug. 24,1926. I

' 5. c. BR-EKK-EN DUPLEX REGISTER Filedhugu'st 27, 1925 Y 2 Sne ets-Sheet 1 I E. C. BREKKEN DUPLEX REGISTER Filed kugust 2 1925 2Sheets-Sheet 2 Q aM/d&%* y b BY YATTOWEX r 19 other. A'further object isto provide such .Retented Aag. 241;, 1926,

" v This invention relates to registers or ven- EDWARD G. .BREKKETT, OFYEKIN, NORTH D'AKOTA.-

nurnnx imers'rna.

' A pncatmnmea.au ust 27, 192:5. Serial Nb. 52,779.

'. tilatorsllocated between a lower room and an upstairsroom, and morespecifically relates to duplex registers in which air passes. bothupward and downward therethrough.

The objectof my present invention is to provide a device which willpermit two curxrents of air to pass therethroughfrom o 'positedirections and at the same time, wit

out the currents interfering with one ana device which willbe simple,efiicient and inexpensive-in both construction and operation.

Referring to the drawings which constitute apart ofthis application:

' Fig. 1 is a longitudinal section through one embodiment of myinvention.

Fig. 2 is a top plan-view thereof. with a' portion 'broken away.

Fig..- 3 is a longitudinal section through a modification.

Fig. 4 is atop plan view of suchmodification. Y V

Fig. .5 is a section on the line 5-5 of Fig. v

vFig. 6 is a sectional view of a further,

. modification.

In the embodiment of invention shown in Figs. -1 and 2, A represents thecelling of a room and B represents the floor of a sec- -0nd roomdirectly above, between which rooms a circulation of air is desired. Cutthrough'both the ceiling 'A and floor is an opening to receive myimproved duplex register, which-includes'reglster plate C,

outer pipe D, partition E, inner pipe F and damper G.

The register plate C covers the floor opening and is secured to thefloor byscrews C or by any other suit-able fastening means. The registerplate C is provided with a downwardly projectingflange C of a size andshape to fit within the floor opening, and

grating-openings C permit air to pass up and down through'the registerplate G.

The outer pipe D is of such .shape and dimensions as to fit within theopening in ceiling A and floor B, and is formed with a flange D to aidin properly: positioning the pi e within the opening. The pipe D isproa; ed with an extension D? to permit adj ust ment to adapt it for usewith different sizes of floor joists between floors. This exten sion Dis secured to the register plate C and telescopes intothe upper end ofthe as shown at F diagonally,

main outer pipe D'. Between pipe D and extension D a pin and inclinedslot con- :nection D is shown to permit proper-adjustment.

Within the pipe D and approximately .midway of its length, a partition Eis seis shown of cylindrical form, but may be of square, oblong,hexagonal or any other cross-sectional sha Preferably, the pi eF istapered inwar ly at the bottom and extends slightlybelow the level ofthe ceiling The pipe F'is provided with anextension F, which telescopesover the upper end of pipe F, and is adjustably connected thereto by apin and inclined slot connection F The extension F? is fixed to andprojects slightly above the register plate O, and has its upper endinwardly tapered, as shown at F.

The walls of the pipe F are solid and continuous except for two openingsF and F-'which are cut in opposite sides in the pipe F. The opening F isformed by cutting away the-wall of the inner pipe F from a point Fslightly above the lower end of the inner pipe up to a point F at thepartition E. Similarly the opening F is formed b' cutting away the wallof the inner pipe from a point F slightly below the u per end of theinner pipe-down to point at partition E.

pivoted on a pin G which projects horizontally across the inner pipe Fand which has its ends secured to diametrically opposite sidesof theinner pipe. The damper G is pivoted near its center and-is made of suchcontour as to conform to the shape of the inner walls ofthe pipe F, whenextending .go in, seeking an outlet up. The partition E prevents thewarm air from passing directly upwards between pipes D and F as shown inFig. 1, from about, point F to about point F Thus in the --case of thecylindrical Within the inner pipe F, a damper G is i With the damper inthe position shown in Fig.1, the warm air enters through opening F intopipe F and passes up through pipe -F,. as shown by arrows, to he roomabove.

At the same time the cool air in the room above will'fall to the fioor Band will follow along the floor B until it comes to the registeropening, where it will go in, seeking an outlet down. The partition Eprevents this cool air from passing directly downward between pipes Dand F. With the damper in the position shown in Fig.

1, the cool air enters through opening F into pipeF and passes downthrough pipe F, as shown'by arrows, to the room below.

Thus, it is clear that the coolair from. the room 'above can go downinto the room below and the warm air from the room be-' low can go upinto the room'above, without interfering in any way with each other andthus insuring perfect circulation between the two rooms. The inner pipeF and extension F have their outer ends inwardly tapered and extendingslightly be-' ter, preventing air from passing either up or down throughthe register.

In Figs. 3, 4 and 5, Ihave shown a modification showing a slightlydifferent embodiment of my invention. In this form the construction andoperation are, in general,

.' similar to the form shown in Figs. 1 and 2.

There are these diderences, however, that in the modification a.plurality of cool. air chutes and a plurality of warm air chutes areprovided, instead of the single cool air chute and the single warm airchute of Figs. 1 and 2, and further, it will be noted that the damper Gof the preferred form has been omitted in this modification.

Thus, in Figs. 3, 4 and 5,1 have desig nated the ceiling and floor as Hand I, respectively, while the register plate J is fastened to the floorby screws J and grating openings J are provided to permit the air topass through. Also, the outer pipe K is provided with an annular flangeK and fits within the opening in ceiling H. An extension K fixed toregister plate J telescopes into the upper end of pipe K and isadjustable by pin and inclined slot connection K Within outer pipe K andapproximately midway of its length, a partition L is secured, having acentral opening in 'which is fitted and secured an inner pipe M, taperedinwardly at its bottom as at M and extending slightly below the level ofthe ceiling. An extensiop M fixed to register plate J menace telescopesover the upper end of-inner pipe M and is adjustably connected theretoby a connection similar to K As described thus far, the modification issimilar to the preferred form, but the modification differs from thepreferred form in the number of air openings, in the provision. ofindividual air chutes and in the omis sion of a damper. Thus, instead ofthe single warm air opening F of Fig. 1, I providein Figs. 8, 4 and 5,three warm air opening N, equally spaced from each other in thecylindrical wall of pipe M and 10- cated between the partition 'L andthe lowered tapered end M of inner pipe M. Also, instead of the singlecool air opening F of Fig. 1', I provide in Figs. 3 4 and 5,

three cool air openings 0, equally spaced from each other inpthecylindrical wall of pipe M, and located between the partition L and theupper end of inner pipe M. Just as in Fig. 1, the cool air opening Fabove the partition is opposite the warm air opening F below thepartition, likewise in Figs. 3, 4c'and 5, the cool air openings '0 arerespectively opposite the three warm air openings N below the partition.

In order that warm air entering openings N shall be directed upwardlythrough inner pipe M, I provide warm air chutes N and similarly in orderthat cool air entering openings O shall be directed downwardly throughinner pipe M, I provide cool air chutes 0 The inlet mQUii q of the warnlair chutes N register with the res e. warm air openingsN, and the inletmouths of thecool air chutes O register with the respective cool air 0ening O. r 1 The outlet mouths of the warm air chutes N are preferablyof V-shap'e and open upwardly within the inner pipe M, whereas theoutlet mouths of the cool air chutes arealso preferably of V-shape, butopen down-.

being located opposite, as above described, the openings N and. hencethe registering covered chutes N are in alternate or stag-Q goredrelation respectively to the openings 0 and registering. covered chutes0 so that there is no possibility of the cool-air currents issuing fromthe cool air chutesinterfering with the warm air currents issuing fromthe warm air chutes, 1

In this modified form of Figs. 3, 4: and 5, there is no damper to cutoff the circulation of the air, but in other respects the operation isthe same as in the form shown in Fig. l, the warm air from the roombelow enters ing the openings N to be directed by chutes N upwardlythrough pipe M to the room above, and the cool air from the room aboveentering the openings 0 to be directed by through pipe M to my Istruction of Figs. 3, 4 and 5 would be modified if the outer pipe wereof'the polygonal cross-section Q and if the inner pipe were also of thepolygonal cross-section R, in-

stead of the cylindrical forms of the other the invention disclosedwithoutndeparting from the spirit of my invention asset forth in theappendedclaims, and that in' some cases certain features of my inventionmay be used to advantage without a corresponding use of other features.i

I. claim: i I

1. In a device of the class described,

spaced outer and inner pipes, a partition between said pipes, saidlnner' pipe being provided with an opening on each side of saidpartition, and meausfor conducting air currents respectively enteringsaid openings in opposite directions through said inner pipe.

2. In a device of the class described, spaced outer and inner pipes, apartition between said pipes, said inner pipe being provided with anopening on each side of said partitiomand means mounted within saidinner pipe, for conducting air currents respectively enteringsaidopenings in opposite'directions through said inner pipe.

3. In a device of the class described, spaced outer and inner pipes, apartition between said pipes, said inner pipe being provided with anopening on each side'of said'partition, and adamper pivoted within saidinner. pipe for either conducting air entering said openings in oppositedirect1ons through said inner pipe or for preventing air assing throughsaid inner pipe.

4. In a device of the class described, an outer tubular member, aninnertubular member mounted within and spaced from said outer tubular member,and means for conducting an air current in one direction through aportion of each of said tubular membersand for simultaneously conductinganother air current in the opposite direction through a portion of eachof said tubular members. a

5. In a device of the class described, an outer tubular member, an innertubular member mounted within and spaced from said outer tubular member,and means for conducting air entering one end-of said outer tubularmember and passing into said-inner member and out through one end ofsaid inner tubular member and for simultaneou'sly conductingair-entering the other end of said outer tubularmemberand' passing intosaid inner member and out through the other end of said inner tubularmember.

'6. In a device'of the class described, an outer' tubular member, aninner tubular member mountedwithin and spaced from said outer tubularmember, a partition between said tubular members, the wall of said-inner tubular member being provided with an opening on each side ofsaidpartition, and means for conducting air entering one of saidopenings in one direction inside said 5 inner tubular member, and forsimultaneously conducting air entering another-oat said openings .in theopposite direction in side said inner tubular member.

7. Ina device of the class described, an'

outer tubular member, an inner tubular member mounted within and spacedfrom said outer tubular member, a palrtition'between said tubularmembers, the Wall'of said inner tubular member being-provided with anopening on each side of said partition, and means mounted within saidinner' -tubular member for conducting air entering one openingin onedirect-ion inside said inner tubular member, and for simultane 'ouslyconducting air entering the .other opening in the opposite directioninside said inner tubular member.

8. ,In a device of the class described, an

outer tubular member, an inner tubular member mountedwithin and spacedfrom sald outer tubular member, a partition between said tubularmembers, the wall of said inner tubular member being provided with anopening on each side of sald partition,

and-a damper pivoted within said inner tubular member and adapted whenin one vposition to permit and in another position to prevent'airentering the lower opening to pass through the upper end of the innertubular member and air entering the u per opening to pass through the,lower and of the inner tubular member.

9. In a device of the class described, an outer tubular member, an innertubular member mounted .within and spaced from said outer tubularmember, the endsofsaid inner tubular member being inwardly tapered andextending beyond the adjacent ends of the outer tubular member, apartition between said tubular members, the wall of said inner tubularmember being provided with an opening on each side of said partitiomanda damper member within and extending across said inner tubular memher,each opening being between said parti tion and said dampen.

10.' In a duplex register adapted to be positioned in an opening betweenupper and lower rooms, a register plate adapted to be secured to thefloor of the upper room tooverlie said opening, an outer pipe adaptedtofit within said opening and to extend from the ceiling of the roombelow to the floor of the room above,'a partition" extendingtransversely across-said outer pipe, and provided with a central openingtherein, an inner' pipevlocated within said central opening, a damperextending obliquely across said inner pipeand pivotedtherein, the wallof said inner pipe intermediate its ends-being proi ided with an upperopening above said partition and below said damper, and with a loweropening below said partition and above said damper, whereby o'ld airfrom the upper room descending into the space above the partitionbetween the outer and inner pipes enters through said upper the innerand outer pipes enters through said lower opening into said inner 'pipeand passes upwardly and out through the upper end of said inner pipeinto said upper room,

said inner pipe haVIng its ends tapered inwardly and having its endsextending above said floor and below said ceiling, respectively,therebypreventing cold air from the room above entering directly intothe upper endof the inner pipe, and 'pr eventing'warm air from the roombelow entering directly into the lower end of the nner pipe.

EDWARD .o/BREKKEN.

